Works directly with 3rd Gen Dot. When using with the Nest Mini or the Home Hub you will also need our builtin mounts which include the appropriate adapters. | PoE - Power over Ethernet - is the perfect power solution for homes or businesses with hard wired ethernet, new construction, remodeling or where an outlet is not near your voice assistant or Nest Home Hub. | You will also need an Ethernet Switch with PoE Ports to inject the low-volt power into your ethernet cable where internet comes into the structure. These are around $50 and can be purchased on this site. We like the TP-Link TL-SG1005P. | Input Power Voltage: DC 36-54V. | Output Power: DC 12V 15W.